31231313423 has 2 divisors, whose sum is σ = 31231313424. Its totient is φ = 31231313422.

The previous prime is 31231313401. The next prime is 31231313437. The reversal of 31231313423 is 32431313213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31231313423 - 2¹⁴ = 31231297039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31231313392 and 31231313401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31231316423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15615656711 + 15615656712.

It is an arithmetic number, because the mean of its divisors is an integer number (15615656712).

Almost surely, 2^31231313423 is an apocalyptic number.

31231313423 is a deficient number, since it is larger than the sum of its proper divisors (1).

31231313423 is an equidigital number, since it uses as much as digits as its factorization.

31231313423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 26.

Adding to 31231313423 its reverse (32431313213), we get a palindrome (63662626636).

The spelling of 31231313423 in words is "thirty-one billion, two hundred thirty-one million, three hundred thirteen thousand, four hundred twenty-three".